Convert between length, weight, temperature, volume, speed, area, and digital units.
How to Convert Ounces to Grams
Multiply the ounce value by 28.3495. One avoirdupois ounce equals approximately 28.35 grams.
Ounces to Grams Conversion Table
| Ounces | Grams |
|---|---|
| 0.5 | 14.1747 |
| 1 | 28.3495 |
| 2 | 56.699 |
| 5 | 141.748 |
| 10 | 283.495 |
| 15 | 425.243 |
| 20 | 566.99 |
| 25 | 708.737 |
| 50 | 1417.47 |
| 100 | 2834.95 |
| 250 | 7087.38 |
| 500 | 14174.8 |
| 1000 | 28349.5 |
How Many Grams in a Ounce?
1 ounce equals 28.3495 grams. To convert any value, multiply the number of ounces by 28.3495.
Common Use Cases
Bakers following European or Japanese recipes need to convert ingredient weights from ounces to grams for accurate results. Baking is chemistry: 4 oz of flour is about 113.4 grams, and using a kitchen scale calibrated in grams gives the precision that volumetric cups cannot match, especially for delicate pastries and bread.
Postal services price letters and small packages by weight, and international shipping labels require grams or kilograms. A small parcel weighing 12 oz is about 340 grams, and entering the correct gram weight on customs declarations prevents delays, returned shipments, and incorrect postage calculations.
Nutritionists and dietitians converting food-label serving sizes from ounces to grams help clients track macronutrients with greater precision. A 3 oz serving of chicken breast is roughly 85 grams, and gram-based tracking aligns with food databases like USDA FoodData Central, which reports nutrient values per 100 grams.